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合并单元应能输出若干组（）信号分别满足继电保护、测量、计量等不同应用的要求。

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食品生产经营者在采购食品或原料时，除需要查验供货者的许可证外，还应查验（）。

A. 食品合格的证明文件；
B. 健康证明；
C. 培训证明；
D. 学历证明。

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有下列行为之一的，处五日以下拘留或者五百元以下罚款；情节较重的，处五日以上十日以下拘留，可以并处五百元以下罚款：（）。

A. 写恐吓信或者以其他方法威胁他人人身安全的
B. 公然侮辱他人或者捏造事实诽谤他人的
C. 多次发送淫秽、侮辱.、恐吓或者其他信息，干扰他人正常生活的
D. 冒领、隐匿、毁弃、私自开拆或者非法检查他人邮件的

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企业进入国际市场的方式有哪些？

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You are the administrator of a Windows 2000 network. The network consists of a Windows 2000 domain named Company.com. You install Windows 2000 Professional on a new computer named ES1 and configure the TCP/IP settings to have a static IP address. You plan to join ES1 to the Company.com domain. You configure two DNS server addresses in the TCP/IP properties. The first DNS server address is for a DNS server hosted by your ISP, the second DNS server address is for a DNS server authoritative for the Company.com domain. When you attempt to join ES1 to the domain, you are unable to do so. You can successfully PING the IP address of each DNS server from ES1. You want ES1 to be able to join the Company.com domain. What should you do?（）

A. Delete the second DNS server entry.
B. Delete the first DNS server entry.
C. Add an A （host） record for the computer to the appropriate DNS zone.
D. Configure the computer to Obtain an IP address automatically.

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